// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE

// declare global: tern, server

var server;

this.onmessage = function(e) {
  var data = e.data;
  switch (data.type) {
    case 'init':
      return startServer(data.defs, data.plugins, data.scripts);
    case 'add':
      return server.addFile(data.name, data.text);
    case 'del':
      return server.delFile(data.name);
    case 'req':
      return server.request(data.body, function(err, reqData) {
        postMessage({ id: data.id, body: reqData, err: err && String(err) });
      });
    case 'getFile':
      var c = pending[data.id];
      delete pending[data.id];
      return c(data.err, data.text);
    default:
      throw new Error('Unknown message type: ' + data.type);
  }
};

var nextId = 0,
  pending = {};
function getFile(file, c) {
  postMessage({ type: 'getFile', name: file, id: ++nextId });
  pending[nextId] = c;
}

function startServer(defs, plugins, scripts) {
  if (scripts) importScripts.apply(null, scripts);

  server = new tern.Server({
    getFile: getFile,
    async: true,
    defs: defs,
    plugins: plugins,
  });
}

this.console = {
  log: function(v) {
    postMessage({ type: 'debug', message: v });
  },
};
